Table 1.

Sample size by country and survey

	Student survey	Retest survey	Parent survey
Denmark	3867	_	333
Italy	517	164	463
Norway	390	219	267
Poland	493	172	305
Romania	172	_	104
Scotland	564	234	206
Slovakia	613	114	270
Greenland	504	91	65
Total	7120	994	2013